Bally's Idea To Control Twice As Many Coils By Adding 1 Relay - 1981 MEDUSA Pinball Repair 6
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- เผยแพร่เมื่อ 6 ต.ค. 2024
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Thank you so much for documenting the fix on the Medusa. Your walk through the logic and problem solving is amazing Ron. You have such a wealth of knowledge and share so willingly. You continually help keep my pinball machines working. I live in a small community up the west coast here in Canada. So if I can't figure out my problems I'm kind of screwed. Funny story....I was working on my Black Knight the other day. I came back inside the house ( My machines are in there own little studio) and wondered where my cell phone was.....Well then I just walked back out to the studio and there it was in the bottom box of the Black Knight. I was using it as a flashlight for the fix and had closed the playfield with it still sitting in the bottom box. The things we misplace when we are fixing stuff. :)
I did the same thing one time, left my phone inside the machine with the light turned on :)
@@LyonsArcade We are prone to power outages where I live now. Should a pinball machine be plugged into a surge protector power bar in this case instead of just plugged into the wall? When the power comes back on can the surge fry some components if the game is only plugged into the wall? Many thanks Ron!
@@paulclarke7571 lol smh
@@LyonsArcade Good thing you found it before shipping it to a client...
@@paulclarke7571, write _"When the power comes back on can the surge fry some components if the game is only plugged into the wall?"_
From my understanding, the odds of that are incredibly small. The old-school non-switching power supply is going to soak up pretty much any surge before it can get to the electronics. Some machines have a metal oxide varistor (MOV) built into the machine that's useful to protect the machine from things like a lightning strike. So if you're in an area prone to lightning storms a good quality surge suppressor may be a worthwhile addition.
Note: A typical power bar doesn't necessarily have any surge suppression capability, and even when they do it's often minimal. If you live in an area with particularly dirty power a high quality surge suppressor makes sense, or better yet, a UPS. A decent UPS will not only protect your equipment, but will keep the power stable through brown-outs or short term drop-outs (as well as let you keep playing in a full-blown power failure).
What a complex machine. Great ending. Can't wait for the two sound board videos.
Great video Ron. Interesting to see the evolution of the schematics over time.
This is really coming together great Ron.
If I had the money, I would buy it. I love the drop target sequence feature. It makes the player have to really practice their aim (if there is such a thing) to hit the set targets.
It's a cool machine and if you like em tough, this will do the trick.. The outlanes are some of the most unforgiving I've experienced. The display in the middle of the playfield includes the timed extended play feature with unlimited balls, the extra ball feature involves the lower playfield, and the ball save between the bottom flippers. Alot going on for 1981.
It took me 5 attempts to watch this.....all this family life thing is not all it's cracked up to be lol.
But it was worth it. Am really enjoying this very drawn out repair. It's almost like watching old school tv - having to wait patiently for the next episode :D
Thank you for your persistence :)
@@LyonsArcade Not gonna let a whingy teenager spoil my very important viewing 😂
It's coming together, and playable! Just needs sound now...
I love how you're walking us through the diagnosis on the schematics, and sharing your experience with the electronics, especially those connectors.
Bally drop targets are the worst. This game is going to be awesome when it's done. Can't wait for the sound videos. Nice work. It will be like new when it leaves.
Great work as usual Ronnie. … this looks like it’s gonna be a really good game. ….very tricky to get it all up and running though. … thank god Ron’s on the job. …surrender now Medusa, you don’t stand a chance of staying broke!
Thanks for sharing these video's Ron
It's coming along nice!
Wow...fantastic vid...so pleasing to see this slowly coming back to life...all the best...cheers
Im Michael from Sweden, this videos will help me to figure my Medusa out. Gonna remake my zipperflippers and change my lampdriver board to an Alltek board then I think its ready for sale, maybe😂😂
Thank you for watching Michael, good luck with your game!
Amazing how Bally used the same main boards for years. Seems as only the aux light driver and sound boards changed. Makes sense as they added more lamps and improved sound. Going from Chimes to Sound Board freed up three/four solenoid lines, but then they were quickly used and expanded. This commonality is a big reason why I like these old Bally machines. Looking forward to your Medusa sound series.
Brilliant as always buddy 👍👍😁😁MaxsoundCarAudio Uk
Great Video Ron, those solder joints were bad. Its comming on now, cant wait for the sound.
Put it down! 👍😝👍 Always interesting! I continue to learn thanks to your channel!
🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
Really enjoying this series Ron!
Thank you John!
Mama was a looker. Pretty machine.
Man this is such a cool game I always liked this game I would love to have this one for my house
Been waiting forever! Yes!
Today's the Day!
Someone who use to work at Bally decided to troll Ron, let me time travel back to when the schematic was being drafted and added an insert diagram showing where the insert top is.
Almost done😎👍
Ron, enjoying these repairs you, Medusa is an awesome game and challenging to repair. I have one and changed the playfield out with a new CPR one recently.
Throughout the video, whenever I see it, it urks me that the skill shot lamps top left shooter lane aren't working properly. They are in parallel with the gorgon lamps at the spinner, important feature for scoring, hopefully it's just the bulbs.
But, with the shooter lane skill shot lamps, I think it might be a deeper problem than just the bulbs because the spinner middle gorgon lamp seems to be pulsing out of sync. Also, the right-hand side bar bonus lamps, the very last two, they might be lighting together like they're short or something, but maybe you sorted it out when you got into the Aux board repairs.
Yeah I couldn't figure out what was going on with all that either. Everything was wired correctly.... very strange. I feel like it's a software problem... but I've seen other people saying they've used an Alltek board in their Medusa so not sure.
Awesome game!
I wonder if the drop targets had a layer of foam there to make a soft landing and the tape was added to replace that foam at some stage?
Guess we will never know for sure :) I've never seen this game in the wild before. I am loving seeing you bring it back to life. That playfield is really fantastic.
It says Gorgon in the middle of the bumpers . I think that’s who has his back to us at the bottom of the back glass. Same head and ears as the gorgon pinball game
I think you're right... good eye :)
Put the joint down people come on now 😁..no mas weed
What are they doing, why would they do that. Come on now people
Perhaps he's got an extra GOTO 10 line🤣🤣🤣🤣🤣 (computer geek humor)
@@samuelcolvin4994 Yes I know that one lol
@@samuelcolvin4994 while(stoned == true) call(Ron);
It's way over-the-top for a video, but it would be very cool if you could split the data connection from the MPU and run both sound boards at the same time. Then you could record both (on separate tracks) and in editing switch back and forth between them while playing a single game. New Hotness. Old and Busted. New Hotness. Old and Busted.
Still, I'm really looking forward to -seeing- hearing the difference.
So Ronnie - when you replace something like those instructions cards, do you leave the damaged ones in the box for the new owner or go with the reproductions only?
Nice to see this one slowly getting resurrected. Drop targets still seem to not always come up all after reset, at least when you were playing it at the end, but I am sure that will be fixed eventually. I was thinking the masking tape might have been added to reduce the sound of the targets dropping? Since the tape slightly cushions the sound, instead of having the target hit the metal? Just a thought.
I think what was happening with that one light is (you were just about there), I think the bulbs are blinked by charging a cap and then discharging it to the light and the light blinks, the cap discharges, and the process repeats. the cold joint on the pin was somewhat touching, just not as good as necessary, so with each attempt to charge the cap, it's not enough to light the bulb, but after so many times, it builds up enough charge to make it flash (and dimly at that).
Hey Ron!!
Hey Jason
My guess for the masking tape, sound deadening?
I noticed a few things. One is the tens digit of the yellow LED timer display on the playfield keeps advancing more than it should I think (it seems like it is trying to count down but the ones digit keeps advancing the other way). Perhaps a switch is stuck on or a wiring fault of one its data lines? I am also wondering about that unusual flash of lamp seven on the auxillary board while in attract mode. I wonder if there is any connection between the two, perhaps they are multiplexed somehow and the switch stuck on is causing a chip to switch modes in the multiplexing somehow reducing the pulses needed to flash the lamp?
The "like numbers" feature looks like it working correctly.. the left counts up, the right counts down. Complete all the targets on either side of the machine, it locks on a number, then you try to time your shot to complete the other side, matching that locked number to get the extra ball. Not easy to do.
When you replace a drive transistor like that. ALWAYS check the diodes on any coils that it is driving... unsolder one end of the diode and use the diode check function of your meter.
You should definitely do that on yours
@@LyonsArcade The diodes DO go bad and open up, and if that happens, every time the solenoid shuts off, the inductive flyback arcs across the transistor, which eventually kills it. Replacing the transistor will be a temporary fix in that situation.
Lol I love your c'mon people jokes. I don't remember if they have one at my local pinball museum but I'll definitely look for Medusa, such a cool looking game
I just realized something.
In our little drama plays, we all wanted to be the heroes of our story.
For instance,
Southern people wanted to be the Duke Boys (or even Uncle Jesse!) when the truth is more of them are like Roscoe P. Coltrane, or Deputy Enos.
Well, it's better than being Boss Hogg!
Just as long as we all realize, no matter WHERE we live, society really is pretty damned screwed up, isn't it?
I've read Plastic Man comics. As crazy as his powers are, NOTHING is as crazy in a Plastic Man comic as ALL THE OTHER PEOPLE running around him!!!
Hello
Yodelayheehoo
Hello Lil Everette!
Hey Ron, what are you packing to take an 80 pound suitcase?
#7 “south” decoder.
Oh man am I behind! This is going great. Isn’t this doubler just the same as the Williams A/C relay?
This was 1981
@@LyonsArcade When was the first A/C? 83? (So this was first by a while then?)
Al Reizerman one of Bally designers
Just like Flash Gordon's I had to aligned so ball would not catch in target holes n would eventually peel playfield paint in the wood beast as it was called.
Maybe they put the tape in as a dampener to quiet it down? Ah, someone beat me to it.
Like Joe says it's broke
Just curious do you ever use flux?
The solder has flux in it, when we want extra we just pour vapor rub all over it :)
@Joe's Classic Video Games Ahh yes kill two birds with one stone no cold solder joints and clear your sinuses.
Will that actually work? I rarely use flux but I'm usually working on old boomboxes and they seem to end up ok.
Come on ppl...ppl...😂
Come on now Mrouse79565 we can'..... we can't do that come on now. What are they thinking? Why would they do that.... come on now
My doctors want me taking gabapentin theoretically indefinitely for nerve damage cause in an accident. Smoking reefer at night, which is legal where I live, actually relieves the pain better and has much more tolerable side effects than gabapentin which a lot of people actually call morontin. I think you're out of line for casting judgements upon me without even knowing me. I won't be watching anymore. Unsubbed
You’ll be alright stop calling me on the phone high on dope
@@LyonsArcade never called you man. Exactly my point you want to insult a group of people over 1 situation with 1 person. There's a word for that. It's bigotry